﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Demo10
{//鸟类
    class Birds:animal
    {
        public void wing()
        {
            Console.WriteLine("我有翅膀");
        }
        public void fly()
        {
            Console.WriteLine("我会飞");
        }
    }
}
